681123607575 has 96 divisors (see below), whose sum is σ = 1220021913600. Its totient is φ = 334234177920.

The previous prime is 681123607573. The next prime is 681123607603. The reversal of 681123607575 is 575706321186.

It is not a de Polignac number, because 681123607575 - 2¹ = 681123607573 is a prime.

It is a super-4 number, since 4×681123607575⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681123607573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6929422 + ... + 7027028.

It is an arithmetic number, because the mean of its divisors is an integer number (12708561600).

Almost surely, 2^681123607575 is an apocalyptic number.

681123607575 is a deficient number, since it is larger than the sum of its proper divisors (538898306025).

681123607575 is a wasteful number, since it uses less digits than its factorization.

681123607575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97781 (or 97776 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 51.

The spelling of 681123607575 in words is "six hundred eighty-one billion, one hundred twenty-three million, six hundred seven thousand, five hundred seventy-five".